CN212177250U

CN212177250U - Engine cylinder piston lubricating and spraying structure

Info

Publication number: CN212177250U
Application number: CN202020717021.6U
Authority: CN
Inventors: 汪元盛
Original assignee: Wuyi Weisenke Power Technology Co ltd
Current assignee: Wuyi Weisenke Power Technology Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-18
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses an engine cylinder piston lubricating and spraying structure, which belongs to the field of engine piston lubricating structures and comprises a crankcase and a piston cylinder detachably connected on the crankcase, wherein the crankcase is formed by connecting an upper shell and a lower shell, a bearing mounting hole is arranged in the crankcase, an annular oil guide groove is arranged on the hole wall of the bearing mounting hole, a crankshaft collar is arranged in the bearing mounting hole and is jointed with the notch of the annular oil guide groove, a piston reciprocates up and down in the piston cylinder and drives the crankshaft to rotate in the crankshaft collar through a connecting rod, an oil inlet is arranged at the lower bottom of the annular oil guide groove, the oil inlet is communicated with an oil duct arranged below the bearing mounting hole, an oil outlet is arranged at the upper bottom of the annular oil guide groove, the oil outlet is communicated with a first oil spraying duct and a second oil spraying duct which are connected end to end, an oil, the aperture of the oil nozzle is larger than that of the second oil injection passage. The utility model discloses the lubricated oil mass that sprays out is big, and is lubricated effectual.

Description

Engine cylinder piston lubricating and spraying structure

Technical Field

The utility model relates to an engine piston lubricating structure field especially relates to engine cylinder body piston lubrication spraying structure.

Background

The motorcycle engine is used as the heart of the motorcycle to drive the motorcycle to move, the engine comprises a piston cylinder body, a piston arranged in the piston cylinder body, a crankshaft connecting rod assembly and a crankcase, the crankshaft connecting rod assembly is driven by the piston to rotate and is transmitted to an external wheel through a connecting mechanism to drive the wheel to rotate. Because the friction between the reciprocating motion of the piston and the cylinder and the heat of combustion in a combustion chamber of the engine cause the temperature of the piston to be very high, the service life of the piston is easily reduced due to the overhigh temperature of the piston, the emission of pollutants is increased, and the noise is generated, and the currently adopted engine cooling method is to cool by splashing engine oil.

For example, the right crankcase body of the motorcycle engine with the authorization notice number of CN202970946U comprises a body; the body is provided with a crankshaft bearing mounting hole; oil passages are arranged on the outer side of the body and above the crankshaft bearing mounting hole; a first oil injection hole and a second oil injection hole which are connected end to end are arranged on the inner side of the body and above the crankshaft bearing mounting hole; the outlet of the first oil injection hole extends towards the direction departing from the crankshaft bearing mounting hole; the included angle between the first oil injection hole and the second oil injection hole is an obtuse angle; the second oil jet hole is communicated with the oil duct. The first oil spray hole used for spraying lubricating oil to the crank connecting rod mechanism in the engine has smaller outlet aperture, less amount of the lubricating oil is sprayed, and poor lubricating effect on the piston and the crank connecting rod mechanism is achieved.

Disclosure of Invention

The utility model aims to solve the technical problem that an ability is lubricated to piston and connecting rod swivelling joint oil spout in the engine is provided to the oil spout volume is big, lubricated effectual engine cylinder body piston lubrication sprays the structure.

The technical scheme of the utility model is that: the lubricating and spraying structure of the piston of the engine cylinder body is characterized by comprising a crankcase and a piston cylinder detachably connected to the crankcase, wherein the crankcase is formed by connecting an upper shell and a lower shell, a bearing mounting hole is arranged in the crankcase, an annular oil guide groove is arranged on the hole wall of the bearing mounting hole, a crankshaft shaft collar is arranged in the bearing mounting hole, the crankshaft shaft collar is attached to a notch of the annular oil guide groove, the piston reciprocates up and down in the piston cylinder and drives a crankshaft to rotate in the crankshaft shaft collar through a connecting rod,

the annular oil guide groove is provided with an oil inlet at the bottom, the oil inlet is communicated with an oil duct arranged below the bearing mounting hole, an oil outlet is arranged at the upper bottom of the annular oil guide groove and communicated with a first oil spraying duct and a second oil spraying duct which are connected end to end, an oil injection port is arranged at the opening of the second oil spraying duct and faces the rotary connection position of the piston and the connecting rod, and the aperture of the oil injection port is larger than that of the second oil spraying duct.

The crankshaft collar is provided with a plurality of through holes penetrating through the inner surface and the outer surface of the crankshaft collar, one end opening of each through hole faces the crankshaft in the bearing mounting hole, and the other end opening of each through hole is communicated with the annular oil guide groove.

The oil injection port is a horn mouth, a small opening of the horn mouth is connected with an opening of the second oil injection passage, and a large opening of the horn mouth faces to the rotary connection position of the piston and the connecting rod.

The bearing mounting hole is characterized in that a limiting groove is formed in the hole wall of the bearing mounting hole, a corresponding limiting convex part is arranged on the outer surface of the crankshaft collar, and the limiting convex part is clamped in the limiting groove to limit the crankshaft collar to move in the bearing mounting hole.

Compared with the prior art, the utility model has the advantages that be equipped with the annular on the pore wall of bearing mounting hole and lead the oil groove, be provided with the bent axle collar in the bearing mounting hole, the notch laminating of oil groove is led with the annular to the bent axle collar, the oil groove is led to the annular and is gone to the bottom and be equipped with the oil inlet, and the oil inlet intercommunication is located the oil duct of bearing mounting hole below, and the annular is led the oil groove upper base and is equipped with the oil-out, and oil-out intercommunication end to end's first spouts the oil duct and the second spouts the oil duct, and the opening part that the oil duct was spouted to the second is equipped with the nozzle, and the nozzle is facing to the swivelling joint department of piston and connecting rod, and the nozzle sprays lubricating oil to the swivelling.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a structural schematic view of a lower shell of the crankcase.

Fig. 3 is a back schematic view of the present invention.

Fig. 4 is an internal cross-sectional view of the present invention.

FIG. 5 is a schematic view of a crankshaft collar configuration.

In the figure: 1. a crankcase; 2. an upper shell; 3. a piston cylinder; 4. a piston; 5. a connecting rod; 6. an oil injection port; 7. a second oil jet passage; 8. a first oil jet passage; 9. an oil outlet; 10. an annular oil guide groove; 11. a bearing mounting hole; 12. a lower case; 13. a limiting groove; 14. an oil inlet; 15. a crankshaft; 16. a crankshaft collar; 17. perforating; 18. an oil passage; 19. a limiting convex part; 20. an outer surface; 21. an inner surface.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in figures 1-5, the lubricating and spraying structure for the piston of the engine cylinder body comprises a crankcase 1 and a piston cylinder 3 detachably connected to the crankcase 1, wherein the crankcase 1 is formed by connecting an upper shell 2 and a lower shell 12, the upper shell 2 and the lower shell 12 are detachably connected, and the piston cylinder 3 is connected to the upper shell 2.

As shown in fig. 1, 2, and 5, a bearing mounting hole 11 is formed in the crankcase 1, an annular oil guide groove 10 is formed in a hole wall of the bearing mounting hole 11, a crankshaft collar 16 is disposed in the bearing mounting hole 11, the crankshaft collar 16 is attached to a notch of the annular oil guide groove 10, an outer surface 20 of the crankshaft collar 16 is combined with the annular oil guide groove 10 to form an annular oil guide passage, further, a limiting groove 13 is further disposed on the hole wall of the bearing mounting hole 11, a corresponding limiting protrusion 19 is disposed on the outer surface 20 of the crankshaft collar 16, and the limiting protrusion 19 can be clamped in the limiting groove 13 to limit the crankshaft collar 16 to axially move in the bearing mounting hole 11, so that the crankshaft collar 16 is prevented from deviating to prevent the annular oil guide passage from being formed between the crankshaft collar 16 and the annular oil guide groove 10.

As shown in fig. 1 and 4, a piston 4 built in a piston cylinder 3 reciprocates up and down and drives a crankshaft 15 to rotate in a crankshaft collar 16 through a connecting rod 5, the crankshaft collar 16 is provided with a plurality of through holes 17 penetrating through an inner surface 21 and an outer surface 20 of the crankshaft collar 16, one end of each through hole 17 is opened to face the crankshaft 15 in a bearing mounting hole 11, and the other end of each through hole is opened to communicate with an annular oil guide groove 10; an oil inlet 14 is formed in the lower bottom of the annular oil guide groove 10, the oil inlet 14 is communicated with an oil passage 18 formed below the bearing mounting hole 11, lubricating oil in the engine enters the annular oil guide groove 10 from the oil passage 18 under pressure, and the lubricating oil in the annular oil guide groove 10 can flow onto a crankshaft 15 from a through hole 17 in a crankshaft collar 16 to lubricate the rotating crankshaft 15.

As shown in fig. 1 and 4, an oil outlet 9 is formed in the upper bottom of the annular oil guide groove 10, the oil outlet 9 communicates with a first oil spray duct 8 and a second oil spray duct 7 which are connected end to end, further, the first oil spray duct 8 and the second oil spray duct 7 are a vertical upward oil spray duct and an oblique upward oil spray duct, and the arrangement is more convenient for punching; the opening part of the second oil spraying duct 7 is provided with an oil spraying opening 6, the oil spraying opening 6 faces the rotary connection part of the piston 4 and the connecting rod 5, the aperture of the oil spraying opening 6 is larger than that of the second oil spraying duct 7, preferably, the oil spraying opening 6 is a horn-shaped opening, a small opening of the horn-shaped opening is connected with an opening of the second oil spraying duct 7, a large opening of the horn-shaped opening faces the rotary connection part of the piston 4 and the connecting rod 5, the oil spraying opening 6 with the large aperture enables the amount of oil sprayed to the rotary connection part of the piston 4 and the connecting rod 5 to be large, and the lubricating effect is good.

The flow path of the lubricating oil is as follows: lubricating oil enters the annular oil guide groove 10 from the oil passage 18 under pressure, flows upwards to the oil outlet 9 along the annular oil guide groove 10, sequentially enters the first oil spraying passage 8 and the second oil spraying passage 7 from the oil outlet 9, and is sprayed to the rotary connection position of the piston 4 and the connecting rod 5 from the oil spraying opening 6.

It is right above the utility model provides an engine cylinder body piston lubrication sprays structure has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The lubricating and spraying structure of the piston of the engine cylinder body is characterized by comprising a crankcase and a piston cylinder detachably connected to the crankcase, wherein the crankcase is formed by connecting an upper shell and a lower shell, a bearing mounting hole is arranged in the crankcase, an annular oil guide groove is arranged on the hole wall of the bearing mounting hole, a crankshaft shaft collar is arranged in the bearing mounting hole, the crankshaft shaft collar is attached to a notch of the annular oil guide groove, the piston reciprocates up and down in the piston cylinder and drives a crankshaft to rotate in the crankshaft shaft collar through a connecting rod,

2. An engine block piston lubrication spray structure as claimed in claim 1 wherein said crankshaft collar has a plurality of perforations extending through its inner and outer surfaces, one end of the perforations opening to the crankshaft in the bearing mounting bore and the other end opening to an annular oil guide channel.

3. The engine cylinder piston lubrication spray structure of claim 1, wherein the oil injection port is a bell mouth, a small opening of the bell mouth is connected with an opening of the second oil injection passage, and a large opening of the bell mouth faces a rotary connection position of the piston and the connecting rod.

4. The engine cylinder piston lubrication spray structure according to claim 1, wherein a limiting groove is formed in the wall of the bearing mounting hole, a corresponding limiting convex portion is formed on the outer surface of the crankshaft collar, and the limiting convex portion is clamped in the limiting groove to limit the crankshaft collar to move in the bearing mounting hole.